package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Objects;

@Service
@Transactional
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @ApiOperation("菜品分页查询")
    @Override
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.page(dishPageQueryDTO);
        Page<DishVO> p = (Page<DishVO>) page;
        return new PageResult(p.getTotal(), p.getResult());
    }

    @ApiOperation("新增菜品")
    @Override
    @Transactional
    public void add(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.insert(dish);
        Long id = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();
        for (DishFlavor flavor : flavors) {
            flavor.setDishId(id);
        }
        dishFlavorMapper.insertBatch(flavors);
    }

    @ApiOperation("菜品批量删除")
    @Override
    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            Integer status = dish.getStatus();
            if (status == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

//        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
//        if (setmealIds!=null && setmealIds.size()>0) {
//            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
//        }

        for (Long id : ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }
    }

    @ApiOperation("根据id查询菜品")
    @Override
    public DishVO getByIdWithFlavors(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> flavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish, dishVO);
        dishVO.setFlavors(flavors);
        return dishVO;
    }

    @ApiOperation("修改菜品")
    @Override
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.update(dish);
        Long dishId = dish.getId();
        dishFlavorMapper.deleteByDishId(dishId);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors == null || flavors.size() == 0) {
            throw new DeletionNotAllowedException(MessageConstant.DISH_FLAVORS);
        }
        for (DishFlavor flavor : flavors) {
            flavor.setDishId(dishId);
        }
        dishFlavorMapper.insertBatch(flavors);
    }

    @ApiOperation("菜品起售停售")
    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = dishMapper.getById(id);
        if (Objects.equals(status, StatusConstant.ENABLE)) {
            dish.setStatus(StatusConstant.ENABLE);
        } else {
            dish.setStatus(StatusConstant.DISABLE);
        }
        dishMapper.update(dish);
    }

    @ApiOperation("根据分类id查询菜品")
    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);
        return dishMapper.list(dish);
    }
}
